Add initial testing for zarr converter

Author: blowekamp

test/test_zarr_converter.py

@@ -0,0 +1,33 @@
+from click.testing import CliRunner
+import pytools.zarr_converter
+import pytest
+import SimpleITK as sitk
+import json
+from pathlib import Path
+
+args = ["--help", "--version"]
+
+
+@pytest.mark.parametrize("cli_args", args)
+def test_zarr_converter_main_help(cli_args):
+    runner = CliRunner()
+    result = runner.invoke(pytools.zarr_converter.main, cli_args.split())
+    assert not result.exception
+
+
+@pytest.mark.parametrize(
+    "image_mrc",
+    [sitk.sitkUInt8, sitk.sitkInt16, sitk.sitkUInt16, sitk.sitkFloat32],
+    indirect=["image_mrc"],
+)
+def test_zarr_converter1(image_mrc):
+    runner = CliRunner()
+    zarr_path = "output.zarr"
+    with runner.isolated_filesystem():
+        result = runner.invoke(pytools.zarr_converter.main, [image_mrc, zarr_path])
+        assert not result.exception
+
+        with open(Path(zarr_path) / ".zattrs") as fp:
+            zattrs = json.load(fp)
+            assert "multiscales" in zattrs
+            assert "datasets" in zattrs["multiscales"][0]